期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2016
卷号：4
期号：4
页码：5121
DOI：10.15680/IJIRCCE.2016.0404127
出版社：S&S Publications
摘要：Jammers in the wireless network jams the user signals adding more interference signals. Due to that user unable to grasp their own signal from the jammed network. The problem is how to recover the jamming signals to receive the emergency broadcasting message. This is called jamming-resistant broadcast communications under an internal threat model. So implement a novel Time-delayed broadcast scheme (TDBS), which implements the broadcast operation as a sequence of unicast transmissions scattered in frequency and time. TDBS does not rely on commonly shared secrets, or the existence of jamming-immune control channels for coordinating broadcasts. Instead, each node follows a unique pseudo-noise (PN) frequency hopping sequence. TDBS differs from conventional FHSS designs in that two communicating nodes do not follow the same FH sequence, but are assigned exclusive ones. Unlike the typical broadcast in which all receivers tune to the same channel, TDBS propagates broadcast messages as a sequence of unicast transmissions, spread both in frequency and time. To ensure resilience to inside jammers, the locations of these unicast transmissions, defined by a frequency band/slot pair, are only partially known to any subset of receivers. Assuming that the jammer can only interfere with a limited number of frequency bands, a subset of the unicast transmissions are intrusion-free, thus propagating broadcast messages
